package com.example.demo.util;

import java.lang.reflect.Method;
import java.util.HashSet;
import java.util.Set;

import javax.annotation.Resource;

import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.ObjectMapper.DefaultTyping;

@Configuration
@EnableCaching 
public class RedisConfig extends CachingConfigurerSupport {
	
	@Resource
	private LettuceConnectionFactory lettuceConnectionFactory;
	
	
	@Bean
	public KeyGenerator keyGenerator() {
		return new KeyGenerator() {
			
			@Override
			public Object generate(Object target, Method method, Object... params) {
				// TODO Auto-generated method stub
				StringBuffer sb = new StringBuffer();
				sb.append(target.getClass().getName());
				sb.append(method.getName());
				for (Object obj : params) {
					sb.append(obj.toString());
				}
				return sb.toString();
			}
		};
	}
	// 缓存管理器
		@Bean
		public CacheManager cacheManager() {
			RedisCacheManager.RedisCacheManagerBuilder builder = RedisCacheManager.RedisCacheManagerBuilder
					.fromConnectionFactory(lettuceConnectionFactory);
			@SuppressWarnings("serial")
			Set<String> cacheNames = new HashSet<String>() {
				{
					add("codeNameCache");
				}
			};
			builder.initialCacheNames(cacheNames);
			return builder.build();
		}


	
		/**
		 * RedisTemplate配置
		 */
		@Bean
		public RedisTemplate<String, Object> redisTemplate(LettuceConnectionFactory lettuceConnectionFactory) {
			// 设置序列化
			Jackson2JsonRedisSerializer<Object> jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer<Object>(
					Object.class);
			ObjectMapper om = new ObjectMapper();
			om.setVisibility(PropertyAccessor.ALL, Visibility.ANY);
		    om.enableDefaultTyping(DefaultTyping.NON_FINAL);
			jackson2JsonRedisSerializer.setObjectMapper(om);
			// 配置redisTemplate
			RedisTemplate<String, Object> redisTemplate = new RedisTemplate<String, Object>();
			redisTemplate.setConnectionFactory(lettuceConnectionFactory);
			RedisSerializer<?> stringSerializer = new StringRedisSerializer();
			redisTemplate.setKeySerializer(stringSerializer);// key序列化
			redisTemplate.setValueSerializer(jackson2JsonRedisSerializer);// value序列化
			redisTemplate.setHashKeySerializer(stringSerializer);// Hash key序列化
			redisTemplate.setHashValueSerializer(jackson2JsonRedisSerializer);// Hash value序列化
			redisTemplate.afterPropertiesSet();
			return redisTemplate;
		}



}
